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Вопрос:

Решите примеры № 507, 508, 509 на умножение и деление.

Фотография

Ответ ассистента

### № 507 $2 \times 20 = 40$ $20 \times 2 = 40$ $2 \times 30 = 60$ $30 \times 2 = 60$ $40 \times 2 = 80$ $4 \times 20 = 80$ $20 \times 4 = 80$ $2 \times 50 = 100$ $5 \times 20 = 100$ $3 \times 30 = 90$ $60 : 30 = 2$ $80 : 40 = 2$ $60 : 20 = 3$ $100 : 50 = 2$ $90 : 30 = 3$ $100 : 20 = 5$ ### № 508 $2 \times 14 = 28$ $14 \times 2 = 28$ $2 \times 23 = 46$ $23 \times 2 = 46$ $2 \times 15 = 30$ $2 \times 25 = 50$ $2 \times 35 = 70$ $2 \times 45 = 90$ $2 \times 16 = 32$ $2 \times 18 = 36$ $2 \times 17 = 34$ $2 \times 19 = 38$ $2 \times 26 = 52$ $2 \times 28 = 56$ $2 \times 27 = 54$ $2 \times 29 = 58$ $2 \times 36 = 72$ $2 \times 39 = 78$ $2 \times 47 = 94$ $2 \times 48 = 96$ ### № 509 $3 \times 12 = 36$ $3 \times 11 = 33$ $3 \times 13 = 39$ $3 \times 22 = 66$ $3 \times 21 = 63$ $3 \times 32 = 96$ $3 \times 23 = 69$ $3 \times 33 = 99$ $3 \times 14 = 42$ $3 \times 16 = 48$ $3 \times 15 = 45$ $3 \times 17 = 51$ $3 \times 18 = 54$ $3 \times 24 = 72$ $3 \times 19 = 57$ $3 \times 25 = 75$ $3 \times 26 = 78$ $3 \times 28 = 84$ $3 \times 27 = 81$ $3 \times 29 = 87$

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